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post #1 of 9 (permalink) Old 01-16-2013, 03:08 PM Thread Starter
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Need thicker gasket

I'm putting on my exhaust manifold and would like a gasket thicker than the fel-pro. Who sells that kind. How tight should you get the bolts
Mike

Last edited by mwaller5672; 01-16-2013 at 03:10 PM.
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post #2 of 9 (permalink) Old 01-16-2013, 03:20 PM
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There is really no need for gaskets on exhaust manifolds. If you doubt that, consider that the factory didn't use them either.

As for tight, the shop manual can provide a torque value. As for myself, I draw them down just snug + about 1/8 turn more.

Charlie, CMSGT USAF Ret. 65 Hi-Po F/B, 67 GTA F/B (SB) Mustang Owners Club of Austin (MOCA) TX, Member MCA #27479. Now working a '69 M code mach 1.
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post #3 of 9 (permalink) Old 01-16-2013, 03:38 PM
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Is there a leak? Are the headers warped or badly rusted?

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post #4 of 9 (permalink) Old 01-16-2013, 04:52 PM Thread Starter
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The surfaces are a little rough
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post #5 of 9 (permalink) Old 01-16-2013, 05:37 PM
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A machine shop can surface the contact areas of the manifold. Then use clean bolts and Ultra Copper silicone sealant. Bruce
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post #6 of 9 (permalink) Old 01-17-2013, 10:59 AM
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Quote:
Originally Posted by mwaller5672 View Post
I'm putting on my exhaust manifold and would like a gasket thicker than the fel-pro. Who sells that kind. How tight should you get the bolts
Mike
I have a 460cid which are notorious for exhaust leaks. I fixed it with a gasket from (I think) Mr. Gasket. They told me that if I add an suffix A after their gasket part number that it would be made out of thicker, soft AL. You should call them to verify.

Regards,
Ron


-----REMEMBER-----


BUY AMERICAN, YOUR LIFESTYLE DEPENDS ON IT!
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post #7 of 9 (permalink) Old 01-17-2013, 11:31 AM
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Quote:
Originally Posted by LindenBruce View Post
A machine shop can surface the contact areas of the manifold. Then use clean bolts and Ultra Copper silicone sealant. Bruce
Right---a good machine shop should have a large belt sander to lay it on and get a good flat surface across. You could check them with a good straight edge also.


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post #8 of 9 (permalink) Old 01-18-2013, 01:47 PM
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Quote:
Originally Posted by mwaller5672 View Post
I'm putting on my exhaust manifold and would like a gasket thicker than the fel-pro. Who sells that kind. How tight should you get the bolts
Mike
Had a similar situation on my '00 lightning exhaust. Got a set like this Percy's 66035 Percy's Seal-4-Good Header Gaskets= and cured the problem for good. And they are reusable to boot.

1969 Fastback, Fuel injected 302, Disc front, 3 speed, now with A/C and P/S.
2006 F250 SD 6.0
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post #9 of 9 (permalink) Old 01-18-2013, 03:18 PM
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The Percy's gaskets are nice. I'm using them with my JBA headers.


1997 Cobra Convertible (stock)
1965 Mustang 302, T5, 9 Inch
http://forums.vintage-mustang.com/me...-100-1108.html
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